Why do I see empty releases (fix-version) in advanced roadmaps

[petj]

Hi

I am using advanced roadmaps with Initiatives, EPICS etc.

The issues with e.g. 2.4 can be filtered out by not showing this release, is it possible not to show issues with an EMPTY release (fix-version) tag, e.g. to show only the issues for 2.3?

Thanks :)